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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 | /* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com) * Copyright (C) 1997, 1999 Ralf Baechle (ralf@gnu.org) * Copyright (C) 1999 Silicon Graphics, Inc. */ #include <linux/config.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/mm.h> #include <asm/page.h> #include <asm/pgtable.h> #include <asm/system.h> #include <asm/bootinfo.h> #include <asm/sgialib.h> /* memory functions */ void (*_clear_page)(void * page); void (*_copy_page)(void * to, void * from); /* Cache operations. */ void (*_flush_cache_mm)(struct mm_struct *mm); void (*_flush_cache_range)(struct vm_area_struct *vma, unsigned long start, unsigned long end); void (*_flush_cache_page)(struct vm_area_struct *vma, unsigned long page); void (*_flush_page_to_ram)(struct page * page); /* MIPS specific cache operations */ void (*_flush_cache_sigtramp)(unsigned long addr); void (*_flush_cache_l2)(void); void (*_flush_cache_l1)(void); /* DMA cache operations. */ void (*_dma_cache_wback_inv)(unsigned long start, unsigned long size); void (*_dma_cache_wback)(unsigned long start, unsigned long size); void (*_dma_cache_inv)(unsigned long start, unsigned long size); /* TLB operations. */ void (*_flush_tlb_all)(void); void (*_flush_tlb_mm)(struct mm_struct *mm); void (*_flush_tlb_range)(struct vm_area_struct *vma, unsigned long start, unsigned long end); void (*_flush_tlb_page)(struct vm_area_struct *vma, unsigned long page); /* Miscellaneous. */ void (*update_mmu_cache)(struct vm_area_struct * vma, unsigned long address, pte_t pte); void (*_show_regs)(struct pt_regs *); extern void ld_mmu_r4xx0(void); extern void ld_mmu_andes(void); void __init load_mmu(void) { switch(mips_cputype) { #if defined (CONFIG_CPU_R4300) \ || defined (CONFIG_CPU_R4X00) \ || defined (CONFIG_CPU_R5000) \ || defined (CONFIG_CPU_NEVADA) case CPU_R4000PC: case CPU_R4000SC: case CPU_R4000MC: case CPU_R4200: case CPU_R4300: case CPU_R4400PC: case CPU_R4400SC: case CPU_R4400MC: case CPU_R4600: case CPU_R4640: case CPU_R4650: case CPU_R4700: case CPU_R5000: case CPU_R5000A: case CPU_NEVADA: printk("Loading R4000 MMU routines.\n"); ld_mmu_r4xx0(); break; #endif #if defined (CONFIG_CPU_R10000) case CPU_R10000: printk("Loading R10000 MMU routines.\n"); ld_mmu_andes(); break; #endif default: /* XXX We need an generic routine in the MIPS port * XXX to jabber stuff onto the screen on all machines * XXX before the console is setup. The ARCS prom * XXX routines look good for this, but only the SGI * XXX code has a full library for that at this time. */ panic("Yeee, unsupported mmu/cache architecture or " "wrong compiletime kernel configuration."); } } |